EPA 609 CERTIFICATION AND MVAC
REFRIGERANT SAFETY TEST 2026/2027
BANK / EXAM QUESTIONS WILL COME
FROM HERE/ ALL EXAM QUESTIONS
WITH DETAILED VERIFIED ANSWERS
(100% CORRECT ANSWERS/ A+
GRADED
What percentage of the total charge does a R - 1234yf
system receive initially during automated charging ? -
....ANSWER...15 %
What is the proper procedure if a leak is detected during
system charging ? - ....ANSWER...Locate and repair the
leak before continuing
Which standard applies to R - 1234yf recovery / recycling /
recharging equipment ? - ....ANSWER...SAE J2843
,What should be done with disposable refrigerant
containers that appear empty ? - ....ANSWER...Remove
remaining refrigerant before disposal
What is required on the label after retrofitting a system to
use a different refrigerant ? - ....ANSWER...Name and
address of technician and company , date , refrigerant type ,
and lubricant information
A technician must be certified to perform all of the
following A / C system services EXCEPT : -
....ANSWER...Check compressor clutch operation
A refrigerant recovery and recycling station must have a
label saying it is: - ....ANSWER...UL - approved
Refrigerant recycling equipment use and maintenance
guidelines are defined in SAE Standard : -
....ANSWER...J1990
What color is a new container of R - 134a ? -
....ANSWER...Blue
,A container that may be used for recycled R - 12 is
stamped : - ....ANSWER...DOT4BW
Before use , a container of recycled refrigerant must be
tested for : - ....ANSWER...Non-condensable gases
Before testing recycled refrigerant , store the container in a
warm location out of the sunlight for at least : -
....ANSWER...12 hours
When recycling refrigerant , run the recycling pump : -
....ANSWER...Until the moisture indicator shows
standards are met
Possible causes of the heater not providing any heat at all
include all of the following , EXCEPT : -
....ANSWER...High current flow to blower
Very little airflow into the passenger compartment can be
caused by all of the following , EXCEPT -
....ANSWER...speeds An open circuit to the fan motor
, shut A heater control valve may be operated by : -
....ANSWER...Vacuum actuator
An upper radiator hose that collapses as the engine cooling
system cools down is most likely caused by : -
....ANSWER...A defective radiator cap
What is the most likely cause of a heating system that fogs
the windshield and leaves an oily film on the inside of the
glass ? - ....ANSWER...A leaking heater control valve
A grinding noise from the accessory drive belts can be
caused by all of the following . EXCEPT -
....ANSWER...A glazed , cracked or broken drive belt
To pressure - test a heater core : - ....ANSWER...Use a
special pressure tester
A heater core has had sediment buildup ; to remove it by
backflushing : - ....ANSWER...Run water through the
heater core outlet
REFRIGERANT SAFETY TEST 2026/2027
BANK / EXAM QUESTIONS WILL COME
FROM HERE/ ALL EXAM QUESTIONS
WITH DETAILED VERIFIED ANSWERS
(100% CORRECT ANSWERS/ A+
GRADED
What percentage of the total charge does a R - 1234yf
system receive initially during automated charging ? -
....ANSWER...15 %
What is the proper procedure if a leak is detected during
system charging ? - ....ANSWER...Locate and repair the
leak before continuing
Which standard applies to R - 1234yf recovery / recycling /
recharging equipment ? - ....ANSWER...SAE J2843
,What should be done with disposable refrigerant
containers that appear empty ? - ....ANSWER...Remove
remaining refrigerant before disposal
What is required on the label after retrofitting a system to
use a different refrigerant ? - ....ANSWER...Name and
address of technician and company , date , refrigerant type ,
and lubricant information
A technician must be certified to perform all of the
following A / C system services EXCEPT : -
....ANSWER...Check compressor clutch operation
A refrigerant recovery and recycling station must have a
label saying it is: - ....ANSWER...UL - approved
Refrigerant recycling equipment use and maintenance
guidelines are defined in SAE Standard : -
....ANSWER...J1990
What color is a new container of R - 134a ? -
....ANSWER...Blue
,A container that may be used for recycled R - 12 is
stamped : - ....ANSWER...DOT4BW
Before use , a container of recycled refrigerant must be
tested for : - ....ANSWER...Non-condensable gases
Before testing recycled refrigerant , store the container in a
warm location out of the sunlight for at least : -
....ANSWER...12 hours
When recycling refrigerant , run the recycling pump : -
....ANSWER...Until the moisture indicator shows
standards are met
Possible causes of the heater not providing any heat at all
include all of the following , EXCEPT : -
....ANSWER...High current flow to blower
Very little airflow into the passenger compartment can be
caused by all of the following , EXCEPT -
....ANSWER...speeds An open circuit to the fan motor
, shut A heater control valve may be operated by : -
....ANSWER...Vacuum actuator
An upper radiator hose that collapses as the engine cooling
system cools down is most likely caused by : -
....ANSWER...A defective radiator cap
What is the most likely cause of a heating system that fogs
the windshield and leaves an oily film on the inside of the
glass ? - ....ANSWER...A leaking heater control valve
A grinding noise from the accessory drive belts can be
caused by all of the following . EXCEPT -
....ANSWER...A glazed , cracked or broken drive belt
To pressure - test a heater core : - ....ANSWER...Use a
special pressure tester
A heater core has had sediment buildup ; to remove it by
backflushing : - ....ANSWER...Run water through the
heater core outlet
